How to Fall Slower Than Gravity Submitted by Adhemar Bultheel | 14 / Aug / 2019 Read more about How to Fall Slower Than Gravity
100 Geometric Games Submitted by Adhemar Bultheel | 16 / Nov / 2015 Read more about 100 Geometric Games
100 Numerical Games Submitted by Adhemar Bultheel | 16 / Nov / 2015 Read more about 100 Numerical Games
Figures for Fun: Stories, Puzzles and Conundrums Submitted by Adhemar Bultheel | 16 / Nov / 2015 Read more about Figures for Fun: Stories, Puzzles and Conundrums
Mathematical Curiosities. A Treasure Trove of Unexpected Entertainments Submitted by Adhemar Bultheel | 25 / Aug / 2014 Read more about Mathematical Curiosities. A Treasure Trove of Unexpected Entertainments
Jim Totten's Problems of the Week Submitted by Adhemar Bultheel | 5 / Nov / 2013 Read more about Jim Totten's Problems of the Week
